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Finding the Fourth Proportional to 388,500.91, 536,155.94 and 235,553.74

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Solution

The fourth proportional to 388,500.91, 536,155.94 and 235,553.74 is: 325,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,500.91 : 536,155.94 = 235,553.74 : x
  2. Step 2: Convert to fraction form
    388,500.91/536,155.94 = 235,553.74/x
  3. Step 3: Cross multiply
    388,500.91x = 536,155.94 × 235,553.74
  4. Step 4: Simplify right side
    388,500.91x = 126,293,536,138.71
  5. Step 5: Solve for x
    x = 126,293,536,138.71/388,500.91
  6. Step 6: Final answer
    x = 325,079.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.